Peter buys a bag of 21 sweets. in the bag there 13 red sweets, 6 green sweets and

Peter buys a bag of 21 sweets. in the bag there 13 red sweets, 6 green sweets and 2 yellow sweets peter likes red sweets and eats 3 of them he then asks his sister to choose one sweet at random from the bag. there are 2 questions to answer. what is the probability that she chooses a red sweet? what is the probability that she chooses an orange sweet?